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      • 지방정부 홈페이지의 사용성 평가모형 개발과 사례연구

        장무경 남서울대학교 2010 남서울대학교 논문집 Vol.16 No.1-1

        The usability of public agency's homepage gets increasingly interesting after the clear emphasis of e-government was on citizen-centered services. Most of related researches focus on the heuristic approach to find out opportunities of homepage improvement by using expert's evaluation. However, as for local governments whose homepage should provide services to all citizens and cover various information needs of them, the expert-driven approach seems not to be appropriate. The paper proposes an citizen-centered approach to evaluate the usability of local government's homepage and focuses on the development of usability evaluation criteria model. A simple survey was made from the model and a case study was conducted for the homepage of Seoul city. Key Words : Local Govenrnment's Homepage, Usability, Citizen Survey.

      • KCI등재
      • KCI등재

        Dispatcher(전화 상담원)의 보조에 의한 심폐소생술

        안무업,김영식,이부수,황성오,임경수 大韓應急醫學會 1992 대한응급의학회지 Vol.3 No.1

        Background: Dispatcher-assisted telephone instruction in cardiopulmonary resuscitation(CPR) has been proposed to increase rates of bystander CPR in cases of out-of-hospital cardiac arrest. In Korea, bystanders do not know how they resuscitate the victims and EMS(Emergency Medical System) is incomplete. Study Objectives: This study was undertaken to tested the efficacy of dispatcher assisted telephone CPR using a recording mannikin(Anne Resusci) in a highstress, simulated cardiac arrest scenario. Study Subjects: We assesed in a group of volunteers, without prior CPR lectured and training(GroupⅠ, n=20), without prior CPR training but received lecture previously(Group Ⅱ, n=20) who received telephone instruction were compared with that of previously recevied lecture and tranined(Group Ⅲ, n=20) who received same massage. Performances of above groups were also compared with a group(Group Ⅳ, n=20) composed of previously received lecture and trained volunteers who did not receive the massage. Results: Members of groups Ⅰ,Ⅱ, and Ⅲ delivered similar average ventilation volumes, approximately 1L/cycle. In contrast, group Ⅳ delivered somewhat less, about 700ml/cycle(p<0.05). Group Ⅰ performed ventilation better than group Ⅳ but there was no significant intergroup differences in the performing effective chest compressions. The global performance of group Ⅲ, the group with prior CPR lecture, trained and telephone instruction, was superior to that achieved by other groups(p<0.05). We conclude that dispatcher-assisted telephone CPR can offer a safe and cost-effective means to increase the rate of bystander CPR and also improves the quality of CPR performed by persons with prior CPR training.

      • 클러터 제거능력이 향상된 Coherent 레이다 신호처리용 저부엽 도플러 필터 뱅크 합성 알고리즘에 관한 연구

        허경무 단국대학교 신소재기술연구소 1995 신소재 Vol.5 No.-

        본 논문은 Coherent 레이다 도플러 프로세싱에 직접 적용할 수 있는 저부엽(Low Sidelobe) 도플러 필터 뱅크 합성 알고리즘으로서 특히 클러터 제거능력이 향상된 알고리즘을 제안하였다. 본 논문에서는 부엽 레벨(Peak sidelobe Level)을 기존 방식보다 훨씬 더 낮출수 있게 하는 동시에, 필터 간격을 임의로 선택하여 필요한 개수만큼 합성이 가능한 일반적인 알고리즘을 제안한다. 그리고 클러터 제거 능력(Clutter Suppression)에 더 큰 비중을 두어 Zero Frequency에서의 필터 응답을 0(-∞ dB)로 보장하도록 변형한 알고리즘인 클러터 제거능력 향상형 필터 뱅크 합성 알고리즘을 제시한다. 이 알고리즘은 부엽 레벨(PSL)을 원하는만큼 더 줄일수 있고 또한 각각의 부엽들의크기가 모두 같은 Equivalent Ripple Level 특성을 보장하는 뛰어난 성능 향상을 동반한다. 시뮬레이션을 통하여 알고리즘의 성능을 나타내는 설계치 접근도 및 수렴속도를 고찰해 본 결과 상당히 우수한 것으로 확인되었고, 실제 Radar 시스템에의 시험을 통해서 그 성능향상을 확인할 수 있었다. This paper concerns a low sidelobe digital doppler filter bank synthesis which enhances the clutter suppression performance of coherent pulse doppler radar and also can reduce PSL(Peak Sidelobe Level) to the desired level sufficiently. The basic idea of the algorithm is that the optimum filter coefficients are determined through the iterative adjustment of the zeroes of the filter transfer function until the desired performance is obtained. the simulation shows that the proposed algorithm has an excellent clutter suppression capability and 춤 reduce PSL even to-120dB without a great increase in mainlobe bandwidth. It also shows that the proposed algorithm has the Equivalent Ripple Level characteristics.

      • KCI등재

        T.O.D.이론을 이용한 개발 계획에 관한 연구

        백경무 대한건축학회 2004 대한건축학회논문집 Vol.20 No.3

        As Urbanization has rapidly proceeded, the accumulated economic expands, but the related problems from it are appeared seriously. For instance, the exhausted gas from vehicles pollutes the air, and traffic confusion makes worse with an increase of them. It is situated that the transit theory has recently grown and developed since 90c to meet with common problems. To faithfully understand this, I studied on the related fields of transit oriented development which are similar to main concepts and contents such as Stockholm's New Town, Mixed use Development, Sustainable Communities, New Urbanism, Pedestrian Pocket, and Traditional Neighborhood Development. Particularly, I made a focus on Peter Calthorpe's T.O.D. theory because it directly roots on the Public transportation, and is the most general ideas in the subject. Therefore this thesis reached as following results. I found that T.O.D. ultimate goal is to pursuit well mixed used, pedestrian friendly neighborhood, the compactness of urban development, and convenient transit exchange systems. T.O.D. guidelines are classified and applied as the regulation of system{transit, street, pedestrian, and bicycle), of allocation of building use(public, residential, and parking), and of areas(CBD, and secondary areas) when the planning of development establishes.

      • Coherent 레이다용 도플러 필터 뱅크의 부엽레벨과 그 설계에 관한 연구

        허경무 단국대학교 1997 論文集 Vol.31 No.-

        For the enhancement of coherent radar performance, we propose two algorithms by which we can obtain a digital doppler filter bank of lower peak sidelobe level and of enhanced clutter-suppression capability and also of much flexibility in selecting the filter bank frequencies in this paper. The two proposed algorithms are the filter coefficient adjustment algorithm and the filter zero adjustment algorithm. We also analyze the increase of mainlobe bandwidth due to the decrease of peak sidelobe level and compare with other methods which use several type of windows. And we show a design scheme for the effective clutter-suppression of both ground clutters and moving clutters. By the proposed methods, it is possible to achieve higher target-detectability of coherent radar without loss of target SNR.

      • KCI등재

        국내산 사과의 대만 추출경쟁력 제고방안에 관한 연구

        송경환,김병무 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.4

        한·칠레 FIA협정, DDA협상 등 무차별적인 농산물 무역 자유화로 우리 농업은 경쟁력 강화와 더불어 농산물 수출활성화가 중요한 과제로 부각되고 있다. 농산물 수출은 국내가격의 안정, 외화획득, 농가수지개선, 한국 농산물의 브랜드가치 제고 등 여러 가지 면에서 그 효과가 크다고 할 수 있다. 대만은 우리나라 전체 사과 수출액 중에서 96%를 차지하여 우리나라의 유일한 수출국이라고 해도 과언이 아니다. 국내산 사과의 대만 수출은 다른 나라에 비해 비교적 거리가 가까워 물류비 절감 및 선도 유지가 가능한 유리한 측면이 있지만 경쟁국들에 비해 품질은 낮으며 가격은 상대적으로 높은 것으로 나타났다. 가격측면에서 분석해 보면 한국산은 미국산보다 23~40%정도 고가이며, 일본산에 비해서는 43~44%수준의 저가이다. 품질측면에서는 5점척도법에 의한 종합평가 결과 일본이 4.2점으로 가장 높았으며 대만이 4.0점, 미국이 3.9점, 우리나라가 3.3점으로 조사되어 국산 사과의 품질이 경쟁국가간에 가장 뒤 떨어지는 것으로 조사되었다. 따라서 한국산 사과의 경쟁력을 제고하기 위해서는 무엇보다 경쟁국들에 비해 뒤떨어진 품질을 향상시키는 것이 중요하며 이를 위해서는 생산과정에서부터 철저히 차별화된 수출전략이 필요하다. 즉, 차별화된 사과 수출은 국내 관매와는 달리 생산에서부터 수확, 선별, 저장, 포장 등에서 대만 소비자의 요구에 맞게 품질을 관리할 필요가 있으며, 수출가격의 불안정으로부터 오는 위험에 대해서는 물류비 보전, 수출보험 지원, 수출 자조금 조성 등 여러 가지 제도적, 정책적 지원이 필요하다. 또한 대만소비자조사 결과 한국사과에 대한 인지도가 매우 낮게 나타났는데 이를 극복하기 위해서는 경쟁국들과 차별화된 광고 및 홍보 전략이 필요하다. 결국 한국산 사과의 대만 수출경쟁력을 높이기 위해서는 품질은 높이고, 가격은 일본에 비해 상대적으로 낮추는 중고가 전략에 의한 고급품 시장으로 진출하는 전략을 펼쳐야 할 것으로 판단된다. Since the launch of WTO, as for our agriculture, the activation of export of agriculture products has been directed as an important subject with the enhancement of competitive power because of indiscriminate trade liberalization of agricultural products. The export of agricultural products could obtain the desired results in various sides like the stability of domestic price, the acquisition of foreign currencies, the improvement of farmhouse balanced, and the improvement of brand value in the Korean agricultural products, etc. It is no exaggeration to say that Taiwan is a sole country of export in Korea, occupying 96% among the total export amount of apple in Korea. As for the export of domestic apple to Taiwan, It was shown as it had advantage in reducing the physical distribution cost and maintaining the degree of freshness because the distance was relatively close compared with the other countries. But, Taiwan was low in quality compared with the competing countries, but the price was comparatively higher. From the analysis in price side, the apples made in Korea was were more expensive than the ones made in U.S.A 23~40%. But, they were cheaper than the ones made in Japan about 43~44% of them. As a result of general evaluation by 5 points dimensional scaling in a side of quality, it was investigated as Japan has high scores as 4.2 points, and Taiwan 4.0 points, and U.S.A 3.9 points, and Korea 3.3 points in order. After all, this study was to investigate that the quality of domestic applies was worst among the rival countries. Accordingly, first of all, it is important for Korea to improve the quality of products inferior to it in quality than the rival countries in order to improve the apples made in Korea. To realize it needs differentiated export strategy from the process of production thoroughly. That is, as for the export of differentiated apple, it needs to manage the quality according to the consumers' demand in Taiwan from the production to harvest, assortment, storage, and wrapping, etc. contrary to the domestic. Also, in a danger from the instability of export price, it needs various systematic support and policy support like the preservation of physical distribution costs, the support of export insurance, and the fostering of export check-off funds, etc. As a result of survey for consumers in Taiwan, it found that the recognition level about the apples made in Korea was too low. Consequently, it needs the differentiated strategy of public relations against the rival countries in order to overcome it.

      • 고차 반복 학습제어에 있어서 제어계수의 선정방법 및 수렴속도 분석에 관한 연구

        허경무 단국대학교 1996 論文集 Vol.30 No.-

        In this paper, the higher-order iterative leaning control method which is expansible to Nth-order iterative learning control and applicable to nonlinear systems is discussed in detail for use in real systems. Specifically, the selection of control gains and the convergence speed of the method are analyzed. Simulation results are given to show the advantages of the method and also some difficulties with the method are given and discussed.

      • 국내분리 porcine reproductive and respiratory syndrome(PRRS) virus에 인공감염된 자돈에 관한 연구

        장경수,조성환,권창희,전무형 충남대학교 수의과대학 동물의과학연구소 1995 動物醫科學硏究誌 Vol.3 No.-

        The Korean isolates of porcine reproductive and respiratory syndrom(PRRS) virus, KPRRSV-1 and KPRRSV-2, were studied on the aspects of pathogenicity in the experimentally infected piglets. The piglets inoculated intranasally(in) with the virus at 10^4.5TCID_50/㎖(GroupⅠ) showed clinical signs of milder fever, respiratory disorders, anorexia, growth retardation and transient leucopenia. It was evident that the virus could be transmitted by contract. Histopathologically interstitial pneumonitis was markedly noted in the lung of all infected piglets. In studies on antibody responses of the experimental animals, seroconversions were noted at 6∼9 days pe in GroupⅠ(in inoculated) and at 12∼15 days pe in Group Ⅱ(contract). The antibody titers at 30 days pe were ranged from 256 to over 1024. By avidin-biotin immunofluorescence(ABIF) assay, the PRRS virus antigens were detected in bronchi, bronchiol and alveolar epitheliums and interalveolar septa of the experimentally infected piglets. The viruses were recovered from the tissues of lung and spleen of the infected piglets.

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